A cutting blade overload protection device for a cutting mechanism of a harvester for leaf and stalk material, having a cutting blade pivotable about a cutting blade rotational axis and which is connected to a toggle lever mechanism. The toggle lever mechanism includes two coupled toggle levers pivotable about a toggle lever rotational axis and which move the cutting blade from an operating position to a resting position when a predefined force is exceeded. To protect the cutting blade better when contacting foreign objects, the device has a toggle lever mechanism which comprises a stop limit and a spring element, with the spring element and limit stop interacting such that when a predefined force is exceeded, the toggle lever rotational axis is moved past a dead center point, with the position of the toggle levers shifting from a first buckling position through a straight position into a second buckling position.

An agricultural vehicle header having a base structure, a header wing section, an articulated joint connecting the header wing section to the base structure, an actuator, a load sensor, and a controller. The actuator is configured to move the header wing section relative to the base structure between a wing lowered position and a wing raised position the load sensor is operatively connected to the header wing section. The controller is configured to acquire load sensor data from the load sensor to evaluate a magnitude of a gravitational load on the header wing section, and prevent the actuator from moving the header wing section towards the wing raised position if the magnitude of the gravitational load exceeds a predetermined threshold load value. An agricultural combine having the header and methods of operating the same are also provided.

A work machine determines, when a request to restart an engine is made, whether or not a reason indicated by stop information stored in a memory is a reason related to locking of the work portion. The machine sets an operation mode of the engine and a work portion to a safe mode if it determines that the reason indicated by the stop information is a reason related to locking of the work portion. The safe mode is an operation mode for lessening damage resulting from causing the engine and the work portion to work during the work portion locked or damage resulting from an object coming into contact with the work portion during the engine and the work portion working.

Apparatus, systems, and methods for operating an autonomous vehicle. In some embodiments, the vehicle is embodied as a mower having a downwardly extending sidewall and a cutting blade assembly. The cutting blade assembly is adapted to cut grass along a path defining a proximal cut edge located at a first distance from the sidewall when the mower is configured in a first operating mode, and at a second distance from the sidewall when the mower is configured in a second operating mode. The mower is adapted to automatically switch from the first operating mode to the second operating mode when an electronic controller associated with the mower determines a local area of operation of the mower is free of unknown objects.

A robotic work tool (1) comprises a cutting disk (6), which is rotatable and height adjustable. The robotic work tool (1) is configured to obtain a final desired cutting height of the cutting disk (6); determine a first cutting height, based at least on the final desired cutting height; raise the cutting disk (6) to an elevated position above the first cutting height; start a rotation of the cutting disk (6); and lower the cutting disk (6) to the determined first cutting height.

A method for running a robotic work tool (1) comprises the steps of obtaining an final desired cutting height; determining a first cutting height, based at least on the final desired cutting height; raising the cutting disk (6) to an elevated position above the first cutting height; starting a rotation of the cutting disk (6); and lowering the cutting disk (6) to the determined first cutting height.

A robotic work tool (1) comprises a cutting disk (6), which is rotatable and height adjustable. The robotic work tool (1) is configured to obtain a final desired cutting height of the cutting disk (6); determine a first cutting height, based at least on the final desired cutting height; raise the cutting disk (6) to an elevated position above the first cutting height; start a rotation of the cutting disk (6); and lower the cutting disk (6) to the determined first cutting height.

A method for running a robotic work tool (1) comprises the steps of obtaining an final desired cutting height; determining a first cutting height, based at least on the final desired cutting height; raising the cutting disk (6) to an elevated position above the first cutting height; starting a rotation of the cutting disk (6); and lowering the cutting disk (6) to the determined first cutting height.

Feederhouse gearboxes are provided for installation on combine harvesters. In embodiments, the feederhouse gearbox includes a gearbox housing, an output shaft rotatable about an output axis, and a primary drive input. The primary drive input is mechanically linked to an engine of the combine harvester when the feederhouse gearbox is installed thereon. A reverser drive input is mechanically linked to a reverser motor of the combine harvester when the feederhouse gearbox is installed on the combine harvester. The feederhouse gearbox further includes a selector mechanism within the gearbox housing and movable between a primary drive position and a reverser drive position, a primary gear train transmitting rotation from the primary drive input to the output shaft when the selector mechanism is in the primary drive position, and a reverser worm drive transmitting rotation from the reverser drive input to the output shaft when the selector mechanism is in the reverser drive position.

A method of monitoring a component of a work machine includes establishing fault threshold range of the component including a range of values of electromagnetic radiation indicative of a potential failure of the component. A controller is configured for receiving data from an infrared sensor related to a current electromagnetic radiation value emitted from the component, and comparing the current electromagnetic radiation value to the fault threshold range of the component. The controller may automatically communicate a first control signal to a machine control device when the current electromagnetic radiation value is within the fault threshold range of the component. The first control signal may include a message warning of potential failure of the component, or may control a drive associated with the component to alter or stop operation of the component prior to failure.

An agricultural machine includes a hitching support, at least one tool or group of tools, at least one support arm which is connected to the hitching support by a first joint and to the tool or tool group, and which is mounted so as to pivot about a transfer axis between operational and raised positions, and a safety device making it possible to carry out a safety movement under the effect of pressure. The safety device includes a lift connected to the hitching support by a second joint. The second joint is offset relative to the first joint in the direction of travel. The safety movement can include a second movement phase during which the lift is able to move the tool or the group of tools away from the ground.

A radio-controlled mower has a frame, an engine unit, rolling bodies configured to move the frame over an area of ground, a central cutting unit, and side cutting units. The frame and the side cutting units are mutually movable.